Spring suspension



Jan. 6, '1931.

F. KUTSUKIAN SPRING SUSPENSION Filed Oct. 30. 1929 Patented Jan. 6, 1931 UNITED STATES SPRING Stateside Application filed mm 30, 1929, Serial 403,610; an in'iael mm'iwt emtegio;192a.'

The present invention concerns a means for mounting an axle in a lorry, trailer or like vehicle and it relates more particularly to vehicles comprising longitudinal spring I suspensions connected to longitudinal frame members by shackles.

The present invention has for its ob ect to provide a. means for mounting an axle in a. vehicle, whereby the load transported by the vehicle maybe considerably increased 1.

and the shocks imparted to the vehicle, when its wheels encounter obstacles, damped as.

springs 3 andfl, x

perfectly as possible.

For this purpose, according to the invention, the axle is supported at both ends by twin springs which are disposed in relation to the chassis in such a way that the shocks and jerks are imparted to said springs along directions at right angles to the planes of their leaves.

With this object in view, the points of suspension of the fore and aft ends of the spijing's are located at different levels in height and the difference in level is such that, when the vehicle has its full load, the efforts imparted to the chassis by the shocks and.

jerks are decomposed in equal parts at the four points of suspension of the springs.

' The twin springs are of the semi-elliptic kind, connected to each other by a common 1 I I "a bracketY12 secured by any appropriate fastening device including a bearing for the axle.

Other characteristic features of the invention will appear from the following description, in which reference is to be had to the figures of the accompanying drawing, which illustrate, merely by way of example, an embodiment of the invention.

Fig. 1 is a diagrammatic side view of the device according to the invention, showing the axle but not the wheels supported thereby;

Fig. 2 is a transverse section through the fore ends of the springs and the means for connecting same to the chassis;

V Fig. 3 is a similar section through the rear ends of the springs and the means for connecting same to the chassis.

On these figures, 1 designates a longitudinal frame bearer and 2 an axle connected to said frainez bearer a pair semi-elliptic of independent shackles- 5:47 and 6-8 respectively, pivotally. mounted on spindles 9,.

and1O respectively, journalledin bearings 11 and 12 depending fromthe bearer 1.-

v The springs 3 and l. are connected to each other: bya single fastening means 13, the shanks 14: of which passjthrough two half-3o bearings 15 and 16 for the axle 2, which are maintained in v fixed position between; the

As canbeseen on thedrawings, the jpivot 9 I the; Sha kl s I2 and s pese x t a lower u level than the. pivot 10 of the shackles (land 8, so that the fore. ends of the springs 3 and 4; are at a higher -le'vel than, the rear ends thereof, whereby the greatest camber of the spring is inclined to the vertical inthe direc- .70

tion of movement of the; vehicle. Owing to this] arrangement, the shocks and jerks received by; the wheels, and the direction of which is also inclined toj the vertical,are imparted to the springs along directions at right angles tolthe'planes oftheir leaves;

thfereby a better damping is obtained.

In a preferred form 0f construction of the "front connecting means for the springs illustrated on Fig. 2, the pivot 10 is supported by $0 means totheframe member 1. v v p shouldered sleeves '18, 19 and 20 retainfthe shackles 6 and Sin their'correctfposition.

The fore; ends of the springs) 3 and 4- are pivotally' connected to bolts 2,1 ,and 22 respectively, which pass through the shackles 6 and 8. A nut 23 maintains the whole device in position.

The rear connection device for the springs? 3 and 4 is illustrated on Fig. 3. A bracket 11 is secured to the frame member 1 and a spindle 9. is j ournalled therein. The shackles 5 and 7 supporting the rear ends of the springs 3 and 4 are pivotally mounted on:;-.

said spindle 9.

It will be seen, on comparing Figs. 2 and 3, that the part 11 is of greater length than the part 12, whereby the rearends of the springs are supported at a lower level than the front ends, so that the springs are inclined to the vertical; In this manner, the efforts are transmitted to the leaves and the fastenin' device 13 at right angles thereto.

he spindle 9 is constituted by a bolt maintained in position by a nut 25 and the shoulder 260i said spindle is intended rigidly to retain the low'er'end of the mud-guard 27,the upper end of which is secured by any ap-, W t. .propriate means to the frame member 1, the

object of this mud-guard being to protect the rear sus nsion against the projection of mud from t e wheels.

' other below sai position on thes'pindle.

As in the deyiceillustr e F g- 2, the

shackles 5 and are maintained in position by shouldered sleeves 28, '29- and 30. ing bolts 31 maybe disposed in-the proper places, in orderto efiect the usual lubricap tion of the'movingparts.

a Itis obvious that any number' of pairs of twin spring suspensions maybe mounted on asame lorryor-vehicle frame.

-The device also :allows of manning the camber of'the springs in the opposite direction, by modifying the relative lengths of the elements 11; and 12. a 1

Itmu'st be understood'that the device according to the invention may be modified as to the'details of construction, without departingfrom the scope of the invention. I

In a vehicle having a chassis and axles, a springsus'pensionht both sides of the chassis" including two semi-elliptic leaf springsparallel to one another, having con- 7 nections intermediate their ends with an axle, onel'spring being located above the comprising two brackets secured to the chassis; spindles projecting from said brackets at different levels in height, three shouldered sleeves arranged end to end on each spindle,

two independent shackles pivotally mounted on said sleeves between the shoulders thereof and respectively pivotally connected to the corresponding ends of the two springs, and means tomaintain the "sleeves in end to end In testimony whereof I have s g d here unto my name." v V I Greas- I axle, and rocking connec- F tions'jat both their ends with the chassis- 

